trickflow

300 rwhp can go 11s with a good suspension and some good driving. To go solid mid 11s, Im going to say a street car will need 350 rwhp or so. I would say the TFS heads and track heat intake will go mid 11s on a higher compression 306. You might have to have the heads ported, but theres definately enough to do it. There are plenty of 300-325 rwhp TFS cars with stock bottem ends that a high compression motor and custom cam should make the power to go mid 11s. The right suspension some low 1.6 or high 1.5 60's and your in!
 
Speed-pro 306 pistons with 10.5:1 compression? 4 valve relief type? -2cc? That is what I have in the works, it only calculates to around 9.8:1 with TFS 61cc heads. You will be very limited to the cam choice due to piston to valve clearance with an inline piston on offset heads. I am pulling out the pistons if not selling the whole shortblock because of it.
 
90mustangGT said:
Speed-pro 306 pistons with 10.5:1 compression? 4 valve relief type? -2cc? That is what I have in the works, it only calculates to around 9.8:1 with TFS 61cc heads. You will be very limited to the cam choice due to piston to valve clearance with an inline piston on offset heads. I am pulling out the pistons if not selling the whole shortblock because of it.

2 valve not 4. The part# on the piston read L2466F 30, but when I went to summit the only part # I found was L2488F 30. So maybe I misread wrong or something is fishy. The guy who I bought the motor from said he had 10:1 comp with edelbrock 61cc heads. I was gonna do some work to get the trickflows down to 58cc so it would be around 10:5.
 
i am also running a 306ci with a trickflow efi manifold, stage 1 trickflow cam, tfs heads 61cc, 24lb injectors, 75mm throttle body, 1.6 rockers, keith black pistons 9.8:1, 190lph fuel pump, 373 gears. about what horsepower should i be in the range of and what whould i run in the 1/4 mile?